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SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!

AlexR

Member Since: January 11, 2012

Country: United States

  • 0-Vcc levels will be recognized by most modern RS-232 hardware. As long as the polarity is correct and this isn’t inverted like TTL, it will work. I can personally attest to these levels working.

  • Just because it’s not valid doesn’t mean it won’t work - most RS-232 hardware inside modern laptops can handle Vcc level swings just fine, as long as the baud rate isn’t extremely high.

    Just because the spec says something doesn’t mean the way they build the hardware to handle the spec will only do what the spec says.

  • It WILL work for a standard serial port - I’ve done this hundreds of times. As long as the voltage swing is about 3V or greater, 0-Vcc levels will be detected by the hardware.

  • Your link to “How does it work?” is broken.

No public wish lists :(